Home / 18,691.90-28,041.96-5,543.47

Finding the Fourth Proportional to 18,691.90, 28,041.96 and 5,543.47

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Solution

The fourth proportional to 18,691.90, 28,041.96 and 5,543.47 is: 8,316.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.90 : 28,041.96 = 5,543.47 : x
  2. Step 2: Convert to fraction form
    18,691.90/28,041.96 = 5,543.47/x
  3. Step 3: Cross multiply
    18,691.90x = 28,041.96 × 5,543.47
  4. Step 4: Simplify right side
    18,691.90x = 155,449,764.00
  5. Step 5: Solve for x
    x = 155,449,764.00/18,691.90
  6. Step 6: Final answer
    x = 8,316.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.